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(SQL Server) Determine the Number of Unseen Email MessagesDemonstrates how to determine how many unseen messages exist in an email account on an IMAP server. Note: This example requires Chilkat v11.0.0 or greater.
-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls. -- CREATE PROCEDURE ChilkatSample AS BEGIN DECLARE @hr int DECLARE @iTmp0 int -- Important: Do not use nvarchar(max). See the warning about using nvarchar(max). DECLARE @sTmp0 nvarchar(4000) DECLARE @success int SELECT @success = 0 -- This example requires the Chilkat API to have been previously unlocked. -- See Global Unlock Sample for sample code. DECLARE @imap int EXEC @hr = sp_OACreate 'Chilkat.Imap', @imap OUT IF @hr <> 0 BEGIN PRINT 'Failed to create ActiveX component' RETURN END -- Connect to an IMAP server. -- Use TLS EXEC sp_OASetProperty @imap, 'Ssl', 1 EXEC sp_OASetProperty @imap, 'Port', 993 EXEC sp_OAMethod @imap, 'Connect', @success OUT, 'imap.example.com' IF @success = 0 BEGIN EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @imap RETURN END -- Login EXEC sp_OAMethod @imap, 'Login', @success OUT, '***', '***' IF @success = 0 BEGIN EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @imap RETURN END -- Select an IMAP mailbox EXEC sp_OAMethod @imap, 'SelectMailbox', @success OUT, 'Inbox' IF @success = 0 BEGIN EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @imap RETURN END -- After selecting the mailbox. the total number of emails -- is immediately available: DECLARE @totalNum int EXEC sp_OAGetProperty @imap, 'NumMessages', @totalNum OUT PRINT 'Num messages = ' + @totalNum -- To determine the number of unseen messages, a call -- to Search is required, which returns the set of UIDs -- of all unseen messages. -- We can choose to fetch UIDs or sequence numbers. DECLARE @fetchUids int SELECT @fetchUids = 1 DECLARE @messageSet int EXEC @hr = sp_OACreate 'Chilkat.MessageSet', @messageSet OUT EXEC sp_OAMethod @imap, 'QueryMbx', @success OUT, 'UNSEEN', @fetchUids, @messageSet IF @success = 0 BEGIN EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT PRINT @sTmp0 EXEC @hr = sp_OADestroy @imap EXEC @hr = sp_OADestroy @messageSet RETURN END DECLARE @numUnseen int EXEC sp_OAGetProperty @messageSet, 'Count', @numUnseen OUT PRINT @numUnseen PRINT 'UIDs ----' -- Display the UIDs DECLARE @i int SELECT @i = 0 EXEC sp_OAGetProperty @messageSet, 'Count', @iTmp0 OUT WHILE @i < @iTmp0 BEGIN EXEC sp_OAMethod @messageSet, 'GetId', @iTmp0 OUT, @i PRINT @iTmp0 SELECT @i = @i + 1 END -- Disconnect from the IMAP server. EXEC sp_OAMethod @imap, 'Disconnect', @success OUT EXEC @hr = sp_OADestroy @imap EXEC @hr = sp_OADestroy @messageSet END GO |
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